Dirk Rilling - Academia.edu (original) (raw)

Papers by Dirk Rilling

Dynamic simulation to determine the thermal behavior of buildings is a helpful tool for design an... more Dynamic simulation to determine the thermal behavior of buildings is a helpful tool for design and transient analysis. Due to the fact of geographical location, buildings in Malaysia act like energy storage facilities. This leads to discomfort and a massive deployment of air-conditioning facilities. The current work aims to describe how the cooling load of residential buildings is to be predicted by utilizing a software Energy-Plus. The simulation focuses on the influences of the environment as well as the geographical location on the buildings. In this simulation, simple constructional changes and insulation appliances are applied on two different designs of residential houses. They showed a up to 50% lower cooling load. Results have also indicated a positive impact on the consumption of electrical power. Hence, building simulation is a supportive application and useful for energy efficient design in the pre-design stage, as well as for identifying the energy optimization potentials of existing residential buildings.

Dynamic simulation to determine the thermal behaviour of buildings is a helpful tool for design a... more Dynamic simulation to determine the thermal behaviour of buildings is a helpful tool for design and transient analysis. Due to geographical location, residents experience thermal discomfort, which leads to massive deployment of air-conditioning systems. The current work aims to describe how the cooling load of residential buildings can be predicted by utilizing buildings simulation software. The simulation focuses on the orientation as well as set-up of the buildings construction. Changes in orientation and insulation appliances are applied on two different designs of residential buildings. They showed up to 43% lower cooling load. Results have also indicated a positive impact in the consumption of electrical power. Since electrical power is provided by power plants burning fossil fuels, up to 40 metric tons of crude oil can be saved, which equals to a saving of up to 126 metric tons of emitted CO2.

Communications in Computer and Information Science, 2012

ABSTRACT This paper proposes a new hybrid algorithm using ant colony optimization and simulated a... more ABSTRACT This paper proposes a new hybrid algorithm using ant colony optimization and simulated annealing intelligent approaches to solve a stochastic dynamic facility layout problem in which product demands are normally distributed random variables with known probability density function that changes from period to period in a random manner. Finally, the performance of the proposed algorithm is compared with the simulated annealing and another approach using data taken from the literature.

Wear, 2010

ABSTRACT The current work is an attempt to use treated betelnut fibres (in mat form) as reinforce... more ABSTRACT The current work is an attempt to use treated betelnut fibres (in mat form) as reinforcement in polyester composites. The fibres were obtained from Alor Star in the state of Kedah, Malaysia. Wear and frictional characteristics of T-BFRP composite were investigated against polished stainless steel counterface under dry/wet contact conditions using a BOD machine. The tests were conducted at 2.8 m/s sliding velocity, different applied loads (5–200 N) and sliding distances (0–6.72 km). Different orientation of the fibre mats with respect to the sliding direction of the counterface was considered; anti-parallel (AP), parallel (P) and normal (N). The worn surface morphology was studied using a scanning electron microscope (SEM). An optical microscope was used to observe the wear track surface on the counterface, and the modifications on the counterface roughness were studied. This work revealed that the wear and frictional performance of the composite were enhanced under wet contact conditions by about 54% and 95% compared to the dry. Specific wear rate under wet test for AP-O (2.5 ± 0.01 × 10−8), and P-O (2.3 ± 0.01 × 10−8), was low compared to the dry test (AP-O: 5.1 ± 0.01 × 10−8; P-O: 15 ± 0.5 × 10−8). The composite exhibited high wear performance in AP-O compared to P-O followed by N-O under both dry/wet contact conditions.

Tribology Transactions, 2011

ABSTRACT Export Date: 29 April 2012, Source: Scopus

Journal of Non-Newtonian Fluid Mechanics, 2012

ABSTRACT

The International Journal of Advanced Manufacturing Technology, 2012

Page 1. CRITICAL REVIEW A review of intelligent approaches for designing dynamic and robust layou... more Page 1. CRITICAL REVIEW A review of intelligent approaches for designing dynamic and robust layouts in flexible manufacturing systems Ghorbanali Moslemipour & Tian Soon Lee & Dirk Rilling Received: 28 January 2011 ...

Proceedings of the …, 2010

Second International Conference on Natural Polymers, Bio-Polymers, Bio-Materials, their Composite... more Second International Conference on Natural Polymers, Bio-Polymers, Bio-Materials, their Composites, Blends, IPN's and Gels Polyelectrolytes and Gels: Macro to Nano Scales ... THE POTENTIAL OF USING TREATED BETELNUT FIBRES AS REINFORCEMENT FOR ...